9. There are 4 switches and a Router. Suppose Host A is sending a Packet to host B. Assume that neither A nor B have sent any packet prior to that. AA:12:F3:5C:01:BC (1) (2) 20:FF:3A:8C:01:4E 10:D4:E1:AB:97:FO BB:89:34:E7:01:38 B a. The # of hosts receiving a frame containing the packet sent by A is b. The # of hosts receiving the same frame containing the packet sent by A is c. Now suppose A sends out an ARP request to find the MAC address the server in the upper part of the left network. The number of hosts receiving the frame containing the ARP request is d. Now suppose the server in the upper part of the left network sends an ARP response. The number of hosts that will be receiving the frame containing this ARP response is